Double-acting deep-well pump.



No. 816,064. PATENTED MAR. 27, 1906. W. S. BERRY 6u L. A. STURGEON. DOUBLE ACTING DEEP WELL PUMP.

APPLICATION FILED .TUNE 12, '1906.

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and LEONARD A. STURGEON, citizens ofthe To @ZZ whom, it may concern:

UNrrEn stime rArENI-f orrorl WILLIAM S- BlflRlnfv AND] LEONARD swiss-EON. Or 'LlNDSAr @auer- @ouate-Asume DEEP-WELL PUMP- Be it known that we, WrLLrAM S. BERRY United States, residing at Lindsay,in the county of Tulare andv State of California, have invented certain new and useful Improvements in Double-Acting Deep-Well Pumps, of which the following is a specification. Y

K This invention relates to a double-acting deep-well pump, the object of the invention being to provide an apparatus of this characq valves 11.

ter which-will be more economical in opera- -i tion than those heretofore provided.

In the accompanyingL drawings, Figure 1 is a broken vertical section of the pump-cylinder.

Fig. 2 is a horizontal section on the line 2 2 of' Fig. 1. Fig. 3 is a similar view on the line 3 3 of Fig. 1. Fig. 4 is a similar view on the line 4 4 of Fig. 1. tion taken at right angles to Fig. 1 of the lower part ofthe pump-cylinder. Fig. 6'is a broken vertical section. of the pipe-column with the pump-rod therein.

Referring to th drawings, 1 represents the pipe-column which carries the water to the surface of the ground, and 2 represents the pump-cylinder connected to said column. Said cylinder, except at the upper portion thereof, comprises an inner tube 3, an outer tube 4, and vertical webs 5,' connectingsaid tubes, thus dividing the annular space between the tubes into two diametrically opposite suction-channels 6 7. At the lower end ,of the inner cylinder are the suction-valves 8 9 and at the upper end are the discharge- The piston 12, fitted with cupleather-s 13, is actuated by the pistoni-rod 14, which is connected to the wooden pumprods 1 5, running to the surface. The section-valves 8 A9 are Lcontained in a cage 16, which forms the lower portion of a yoke .17 the lower portion of which cage, carrying the valve-seats and valves, is tapered and fits into a corresponding taper of the cylinder proper.

on the other, as shown at 19. The yoke 17, formed integral with the cage, carries at the top a collar through a square hole in which the piston-rod 14 slides, anut 21 being securely fastened to the extreme lower end of the piston-rod. The collar is larger than the .Srisates Ofi essere retest Application sied June 12,

Fig. 5 is a broken vertical sec- The upper portion of said cage is closed on one side, as shown at 18, and open were@ Marsh s?, 1906- 1905. Serial No. 264,786.7.

.the same; but it will not permit the nut to ass. The distance between the top of the cage -16 and the lower. surface of the 'collar is greater than the stroke of the piston. now, the cage 1 6, with its valves ,is seated with its lower tapering end in the corresponding taper of the cylinder proper, which can be effec'ted lby means of pressure exerted by the bottom of the rod 14 on the top of the cage, then the nut 21 at either end of its reciprocation will not strike stationary parts when the piston is properly adjusted centrally and is running its proper length of stroke. The pistion-rod is square where it passes through the with its valves, turning in relation to the piston-rod. It is round at the part carrying the double nuts 22 over the upper valve-cage 23, whence it continues round to its connection Awith the woodenV pump-rods 15. The upper -valvecage 28, carrying'the valves 10 and 11, is made tapering, s'o as -to be seated by pressure exerted on'the piston-rod through the medium of the wooden rods from the surface. The two nuts 22 above the upper valve-cage 23 and the yoke 17 with the lower valves, sit in their respective tapering seats at thevsame time. On the other hand, the top nut 25 of vthe piston willraise the upper valve-cage 23 before the nut H21 raises the yoke 17 so that they will notneed to be raised outof their tapering seats, at the same time requiring, therefore, only one.- half the force which will be necessary to raise both at the same time. The upper valve-cage is closed at the bottom on one side, as shown at-26, and open at the bottom on the other side, as shown at 27, the closure 26 of the upper cage beingon the same .side as the opening 19 of the lower cage.

As both valve-chambers must in operation have a certain position relative to the annular passages between the two tubes, two wedges 30 at the top of the cylinder-castings are provided to guide two projections 31 vof the upper valve-chamber into recesses 32 of the cylinder, so located as to hold this valvechamber in its proper position. vThe proper sured by the proper position of the pistonrod. In order to prevent leakage Jfrom one collar of the yoke, so as to prevent the-yoke,

location of the llower valve chamber is inof the upper valve-chambers to the other and rod, permittingthe latter to move freely in i piston and square above the piston up to the ICO also from one of the lower valve-chambers to the other, the pressure in the two upper valvechambers during the operation of pumping being different, as also the pressure in the two lower valve-chambers, ribs 33 are profided, which sit upon the taper of the cylin- The operation of the pump is as follows:

When the piston 11 moves upward, the valve 9 opens, admitting water under the piston, the valve ll being seated by the pressure of the dischargecolumn above it. At the saine time the upward movement of the piston forces the Water above it through the valve 1'0, the valve 8 being seated. On the contrary stroke the process is reversed, the valves 8 and l1 being open and the valves 9 and 10 being seated.

Being a doubleacting pump, the pistonrod and the wooden rods are subjected alternately to subjection and tension. yIn order to prevent the wooden rods buckling under the stress of compression, sets of rollers 35 are provided at proper intervals, slightly smaller in diameter than the inside diameter of the pipe-column and placed so that the planes of the rollers at right angles to their aXes are at right angles to each other.

We claiml. In an apparatus of the character described, the combination of a cylinder having inner and outer tubes, and longitudinal webs dividing the annular space between said tubes into independent suction channels, a piston in the inner tube, only one of the channels communicating with the interior of the inner tube below the piston, and the -other communicating only with the interior of the inner tube above the piston, a cage and a pair of valves carried thereby at the lower end of the cylinder, said valves admitting liquid into the respective channels, and a cage and a pair of valves carried thereby at the upper end ofthe cylinder discharging the liquid from the respective channels, and a piston-rod connected with said piston and also loosely connected to said cages whereby said cages can be withdrawn with the withdrawal of' the piston-rod, 'substantially' as described.

2. In an apparatus of the character described, the combination of a cylinder having inner and outer tubes, and longitudinal webs dividing the annular space between said tubes into independent suction channels, a

piston in the inner tube, a cage in the lower end of the outer tube and having a pair oi valves therein, said cage also vforming a closure on one side of the lower end of the inner tube, but admitting access thereto on the other side, a cage at the upper portion of the outer tube and a pair of valves carried thereby, said cage also forming on one side a closure for the upper end of the inner tube, but admitting access to the inner tube on the other side, and a piston-rod loosely connected to said cages whereby they may be withdrawn with the withdrawal of the piston-rod, substantially as described.

3. In an apparatus of the character dcscribed, the combination of a cylinder having inner and outer tubes and webs dividing the annular space between said tubes longitudinally into independent channels, a cage in the lower end of' the cylinder having two valves admitting the liquid and a closure preventing a passage of liquid from one of said valves to the interior of the inner tube below the piston while permitting the passage of liquid thereinto through the other valve, a cage at the upper end of the cylinder having two valves for permitting the passage of the liquid, and a closure preventing communication between the upper portion of the inner tube and one of said valves and allowing it with the other valve, and a piston working in said inner tube, substantially as described.

In witness whereof we have hereunto set our hands in the presence of two subscribing witnesses.

W. S. BERRY. r L. A. STURGEON. vWitnesses:

FRANCIS M. WRIGHT, Bessin GORFINKEL. 

